The blue world.
Saphiros, a name for around 12,000 island, the world itself and the primary goddess of its inhabitants. There are three dominant sapient species: the redbloods (menfolk), the bluebloods (Merfolk) and the greenbloods (treefolk) and they only occupy around half of the islands. The rest is either not suitable for settlements or unexplored. The temperatures remain mostly the same all year around, as the archipelago lies near the equator of the planet. The north and the south varies a bit. Snow falls only rarely and only in Orleena. There are only two seasons, the wet and the dry, each lasting around half the year, but the wet season is usually longer.
Fauna & Flora
Tropical forests cover three quarters of the land. Huge coral reefs around the edge of the main islands. No matter where you are, crazy coloured stuff surrounds you. Some of it wants to eat you. Actually, most of it. Potatoes are a thing.
A lot of different types of wood, a lot of different types of metal. Different livestock kept above water, different in.
The planet Saphiros orbits around two suns and has 5 additional moons, which means tides are a very complex thing. When one sun eclipses the other, the day is cooler than average and tides are noticeably stronger. This happens every six days, which is why there are six days in a week.